UV Index
UV Index
Today's UV index in Okinawa, Japan 
will be up to 12.1, indicating a extreme level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-05-10
UV index at 12.1 in Okinawa means extreme risk: limit outdoor time especially from 10 a.m. to 4 p.m., actively seek shade, wear protective clothing, broad-brimmed hat, apply SPF 30+ sunscreen every 2 hours, and wear UV-blocking sunglasses. Watch for bright surfaces like water and snow increasing UV exposure.
Okinawa typically has a UV index that ranges from moderate to very high, especially in summer months when it can reach 8 to 11. This means the sun can be very strong, particularly around midday.
The weather in Okinawa features warm, humid summers with frequent rain and typhoons, while winters are mild and dry. Spring and autumn are transitional seasons with comfortable temperatures and less rainfall.
Compared to mainland Japan, Okinawa is warmer year-round and has more tropical weather. Neighboring countries like Taiwan share similar climates, but Okinawa is usually less rainy than Taiwan during typhoon season.
See the UV index hour by hour for Okinawa, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.